Decametre
/ˈdekəmiːtər/
Definition 1 of 1
Pro Tip 1/3Rare in Conversation
Decametre isn't commonly used in everyday speech. It's more frequent in scientific or technical settings. 
In our geography class, we learned that the river widens to several decametres.
Pro Tip 2/3Visualize Measurements
Imagine the length of an average school bus, which helps visualize approximately one decametre. 
The width of the rectangular garden is about a decametre, like a bus laid on its side.
Pro Tip 3/3Scientific Precision
Use 'decametre' when precision matters, such as in scientific research or engineering plans. 
The scientist recorded the depth of the trench in decametres.